The millionaire boyfriend of Rebecca Zahau, whose July death at the Spreckels mansion in Coronado sparked a seven-week investigation and worldwide media coverage, has asked the state Attorney General’s Office to review the case.

In a letter sent Monday, Jonah Shacknai told Attorney General Kamala Harris that he has no reason to question the San Diego County Sheriff’s Department investigation that determined Zahau, 32, committed suicide by hanging herself.

Shacknai said he hopes an evaluation of the department’s findings will quiet the ongoing speculation about the deaths of his girlfriend and his 6-year-old son, Max, who was fatally injured in a fall at the mansion two days before Zahau died.

On Tuesday, a San Diego Superior Court judge ordered at the request of The San Diego Union-Tribune and nine other news organizations that search warrants obtained by sheriff’s investigators be unsealed in the case. The warrants list items taken from the home and detail the whereabouts of Shacknai, his ex-wife and his brother at the time of Zahau’s death.

In his July 13 request for a warrant to search the mansion and a vehicle parked in the garage, Detective Brian Patterson wrote that based on the way Zahau was found he believed the death was a homicide.

“The circumstances being what they were he may have been of that opinion,” homicide Lt. Larry Nesbit said Tuesday. “Obviously, it didn’t turn out that way.”

Nesbit said the warrant laid out the facts after the detective had been at the home for one hour.

Asked if Patterson was still of that opinion, Nesbit said, “Absolutely not.”

Sheriff’s officials on Sept. 2 announced that Zahau’s death was a suicide.

In his letter to the attorney general, Shacknai praised the sheriff’s handling of the case and said he thought the conclusions were sound and scientific.

Shacknai, founder and CEO of Medicis Pharmaceutical Corp. in Arizona, said he hopes an evaluation by Harris of the investigation will help end the “unrelenting and often vicious speculation and innuendo in certain media outlets” that “continue to bring further pain to everyone who has been touched by these tragic events.”

Zahau’s body was found naked and hanging from an outdoor second-story balcony at Shacknai’s oceanfront mansion on July 13. Her feet were bound, her hands were tied behind her back and a T-shirt was wrapped around her neck.

Two days earlier, Shacknai’s son was gravely injured while under Zahau’s care.

The sheriff’s investigation found that the last message she received on her cellphone came a few hours before her death. It told her that Max was not going to survive. The boy died July 16 at Rady Children’s Hospital.

Shacknai said in his letter to the attorney general that he understands the Zahau family has questions about the bizarre circumstances of her death and he appreciates their search for answers.

“I believe the only way to achieve some dignified resolution for everyone who has been touched by the horrible events of this summer will be through the efforts of your office,” Shacknai wrote.

The Attorney General’s Office declined to comment on the letter.

Sheriff Bill Gore said in a statement he believes the investigation was thorough and correct — Max’s death was accidental and Zahau’s death was a suicide — but his department supports Shacknai’s request.

The agency, Gore said, “is always open to reviewing any new evidence which could impact our conclusions.”

The unsealed warrants show that investigators searched the mansion and a Toyota Sequoia. Knives, rope, a cellphone, a bedroom door, a tube of black paint and paint brushes were among the items seized.

Investigators also obtained information from cellphones belonging to Shacknai and his ex-wife, Dina, used between July 11, when Max was injured, and July 13, when Zahau’s body was found.

An affidavit filed in support of one of the search warrants said the only people at the mansion the night before Zahau’s body was found were Zahau and Adam Shacknai, Jonah’s brother. The brother found her body. He was the only one home at the time.

Adam Shacknai had arrived July 12 and was staying in a guest house on the property.

He was given a polygraph exam. The polygrapher said he couldn’t draw a conclusion based on an analysis of the polygraph charts, but he “felt Adam was being truthful during the examination,” according to the court documents.

Dina Shacknai was at the hospital with her son when her ex-husband called about 7 a.m. on July 13 to tell her Zahau had killed herself, according to the documents.

That day, detectives interviewed Jonah Shacknai, who said he hadn’t returned home since the early evening of July 11 when his son was injured. He said he showered, packed some clothes and returned to the hospital.

Two days later, he received a text message from his brother saying that Zahau had hanged herself.